Henry c



H. 0. HAM. OULTIVATOR.

(No Model.)

Patented Mar. 24, 1896.

UNITED STATES PATENT FFIQE.

HENRY o. nan, or LIBERTY, INDIANA, ASSIGNOR 'ro THE RUDE nnornnns MANUFACTURING COMPANY, or SAME PLACE.

CU LTIVATO R.

SPECIFICATION forming part of Letters Patent No. 556,746, dated March 24, 1896.

Application filed November 25, 1895. Serial No. 570,024. No model.)

To all whmn it may concern.- the boss K and bearing upon the conical bolt Be it known that I, HENRY O. IIAM, a citior wedge L, by means of which a perfect pivzen of the United States, and a resident of otal joint may be made between the beam,- Libert-y, in the county of Union and State of bracket and the cross-head. To keep the 5 Indiana, have invented certain new and use conical bolt in the adjusted position and preful Improvements in Cultivators, of which vent the wear acting on the set-screw M, the the following is a full, clear, and exact deboss K is split, as shown at c, Fig. 2, and tight scription, reference being had to the accompressure brought to bear on the wedge L by panying drawings, forming part of this specitightening the nut and bolt f, which passes 1o fication. through the lugs g on the boss. A jam-nut My invention relates to improvements in can also be used on the set-screw to prevent what are known as straddle-row cultivasame from working loose. The conical retors; and it consists of a certain novel concesses in the hub O and cross-head form restruct-ion of the cross-heads and their connecceptacles for the lubrication of the joint, so 15 tions, whereby a simple, cheap and effective that all the parts may be kept tight and yet coupling may be had in which the wear can permit aperfect pivotal connection. be readily taken up and the tendency to rattle In straddle-row cultivator-s it is found deand work loose willbe entirely done away with. sirable to provide three shovels for each plow- In the drawings, Figure 1 is a top plan view beam, and in order that these shovels may 20 of the cross-heads of a straddle-row cultivator be adjusted the proper distance apart it is and their connections. Fig. 2 is a front eleusually necessary to provide separate shanks vation of one of the cross-heads and the beamcurved outwardly, so as to give the desired bracket. Fig. 3 is a side elevation of same, spacing. Instead of doing this, I provide the cross-head being in section. Figs. 4: and blocks N P, Figs. 4. and 5, to be secured to 5 are perspective views of the blocks for exthe outer end of the cross-head and held in tending the ends of the cross-heads. place by the same bolt which secures the A A are the rear ends of the plow-beams, shank,these blocks givingthe necessary space which areconpled to the front axle in the between the outer shovels of each beam, so usual way. that the ordinary shanks G can be used 30 B B are the beam-brackets bolted to the without the necessity of providing separate ends of the beams, provided with a central shanks. The central shovel is secured to the hub, O, and a rearwardly-extending arm D, cross-head on the bracket R in the usual way. to which the plow-handles E E are secured. Having thus described my invention, what F F are the cross-heads suitably grooved I claim, and desire to secure by Letters Patat the outer ends for the bolting thereto of cut, is-- the shanks G G, to which the shovels or plows 1. In a cultivator, the combination of a are secured. beam-bracket having a central hub-like por- II II are the alignment-rods coupled to eyes tion recessed above and cone-shaped at the on the cross-heads in the usual way to keep base and a cross-head with recessed bearing- 40 the plows in proper alignment. A boss K is surface for the base of said hub and coneformed on the central upper portion of the shaped wedge adjustable in the cross-head cross-heads, which is recessed underneath at engaging said recessin the hub with set-screw a for the reception of a wedge or pin L. The to keep said parts in pivotal connection, sublower end of this wedge is coneshaped, as stantially as shown and described. I 5 5 shown in Fig. 3, and takes intoacone-shaped 2. In a cultivator, the combination of a recess Z) in the hub portion C of the beambeam-bracket having a central hub-like porbracket 13. The lower side of this hub portion, recessed above and cone-shaped at the tion C is also cone-shaped, as shown at c, and base and a cross-head with recessed bearingtakes into the cone-shaped recess (1 in the surface for the base of said hub, central boss I00 50 base of the cross-head. on said cross-head recessed underneath and M is a set-screw extending down through split at the front, with cone-shaped wedge adjust-able in said recess, set-screw for adcrease the length of the cross-head and shanks justing same and bolt for tightening said boss for the shovels secured thereto, substantiallv when the Wedge is adjusted substantially as as shown and described. shown and described.

5 3. In a cultivator, the combination with a, itnesses:

beam-bracket and cross-head with pivotal J. H. DAVIS, connection for the part-s of end blocks to in- I-IERBERT DARR.

HENRY C. HAM. 

